Sectional manifold



Jan. 2, 1934. H. H. DODGE 1,

SECTIONAL MANIFOLD Original Filed Sept. 4, 1929 4 Sheets-Sheet l "if QQ INVENTOR Q howy HD0096 ATTORNEYS Jan. 2, 1934. H. H. DODGE SECTIONAL MANIFOLD Original Filed Sept. 4, 1929 4 Sheets-Sheet 2 INVENTOR HOT/j? b. Zoo ye 76 w? ATTORNEYS Jan. 2, 1934. H. H. DODGE 1,941,455

SECTIONAL MANIFOLD Original Filed Sept. 4. 1929 4 Sheets-Sheet 4 AT TORN E Y3 Patented Jan. 2, 1934 UNITED STATES PATENT OFFICE SECTIONAL MANIFOLD Application September 4, 1929, Serial No. 390,361 Renewed June 9, 1933 6 Claims.

This invention relates to manifolds for use with gas burners of the type which are particularly adapted for house heating water and steam boilers and hot air furnaces.

In my copending application, Serial Number 321,156, filed November 22, 1928, I have described and claimed a manifold for properly mixing gas and air to produce a combustible mixture for supplying burners which may be placed in the combustion chamber of any suitable type of household heating unit.

However, as the heating requirements of different houses vary the number of burners required by the heating units therein also varies, so that a flexible unit capable of meeting these variable burner requirements is highly desirable.

An object of this invention is to build a manifold in sections so that the variations in burner requirements may be met by properly fitting together the required number of burner sections to form a unitary manifold.

A feature of the invention resides in a manifold having burner sections each of which includes a plurality of gas mixing chambers and a plurality of passages which register with corresponding passages in filler sections between the burner sections to form gas and air chambers common to the aforesaid mixing chambers.

Another feature of the invention resides in a sectional manifold having a gas chamber and a plurality of air chambers formed of registering passages in the sections of the manifold and means in the end sections of the manifold for supplying gas to the gas chamber and air from a single source to the plurality of air chambers.

A better understanding of the invention may be had from the following description together with the accompanying drawings of which Fig. 1 is a plan view of an assembled manifold which for the purpose of illustration has three burner sections.

Fig. 2 is an end view of Fig. 1 showing the gas and air inlet ports.

Fig. 3 is a sectional view through an end section of the manifold on line 33 of Fig. 1.

Fig. 4 is a sectional View at line 4--4 on Fig. 1.

Fig. 5 is a View of a filler section.

Fig. 6 is a cross-section through a burner section at line 6-6 of Fig. 1.

Fig. 7 another sectional view through the end section, burner section and manifold filler at line '7-7 of Fig. 2.

Fig. 1 shows an assembled manifold, comprising cover plates 2, end sections 3, intermediate burner sections 4, and filler sections 5 placed between the intermediate burner sections. Burners of any suitable type may be associated with each of the intermediate burner sections. The cover plates and the end sections are fastened to the intermediate section by bolts 6 which pass through registering lugs 7, 8, and 9 on the end section, intermediate burner section and cover plate respectively. The filler sections are held in position between the burner sections by bolts 10 which pass through registering lugs 11 and 12 on the burner sections and filler sections respectively. The positions of other bolts for joining the sections are shown in Fig. 2 at 13, 1'4, 15 and 16. For purposes of illustration, a manifold accommodating three burner sections has been shown although it is to be understood and indeed it is to be considered as part of the invention that a manifold to accommodate any desired number of burners may be provided by simply adding filler and burner sections.

Referring to Fig. 6, each burner section of the manifold consists of a pair of mixing chambers 17 and 18 which are supplied with gas from a common chamber 19 through apertures in the discs 42. Air under pressure is supplied to the mixing chambers 17 and 18 from the air chambers 20 and 21 which communicate with the mixing chambers through apertures in the discs 22 and 23. The richness of gas mixture is regulated by the size of the openings in these discs. The combustible mixture passes from the mixing chambers through the Venturi passages 24 and 25' to burners which may be of any suitable type but which preferably are similar to those described in my copending application heretofore referred to. Air is also supplied under pressure to the ducts 26 and 2'7 from the air chambers 20 and 28 respectively. These air ducts constitute no part of this invention, and consequently their purpose and the manner in which the flow of air therein is regulated will not be described.

Referring to Fig. 4 and Fig. 7, it may be seen that the mixing chambers have no connection with each other except through the common gas chamber 19 and the common air chambers 20 and 21. The gas chamber 19 extends the entire length of the manifold through the registering passages 29, 30 and 31 of the end section 3, intermediate burner section 4 and filler section 5 respectively and also through the remaining sections of the manifold which are not shown in these views. Gas is supplied to this chamber under pressure through the port 32 in the cover plate 2. As shown in Fig. 3 the end section is provided with a partition 38 which divides it into the gas compartment 29 and the air compartment 35. The air compartment is supplied by air under pressure through a port 44 from some suitable source not shown. The air chamber 35 communicates through ports 39, 40 and 41 in the rear wall of the end. section with the air chambers 20, 21 and 28. The air chamber 28 which communicates with the air ducts 2'? is best shown in Fig. 7 and comprises the registering passages 37 and 43 in the burner sections and the filler sections respectively. The other air chamber 21, which communicates with the mixing chamber 18, comprises the registering chambers 36 and 45 shown dotted in Fig. 4. This chamber extends the entire length of the manifold and communicates with the chamber 35 in the end section through the port 40 heretofore mentioned. The air chamber 20 which connects with the mixing chamber 17 and the duct 26 is shown in section in Fig. 4 and comprises the registering chambers 33 and 34 and opens into the air chamber 35 in the end section through port 39.

The construction of the filler section is shown in Fig. 5, which is a plan view thereof looking in the direction 55 of Fig. 4 While the details of the ribbed sections which join the air and gas passages are shown in Figs. f and '7 at 47, 48, 49 and 50.

The faces of the registering passages may be machined to provide air and gas-tight joints so that when the manifold is assembled it is equivalent to a manifold made of a single casting. By making the manifold in sections, in accordance with my invention, a manifold to accommodate any desired number of burners may be assembled at a moments notice.

Although I have described my invention with reference to a particular type of manifold it is to be understood that it may be applied to a great number of difierent types of manifolds and is to be limited only by the prior art and the scope of the appended claims.

What I claim is:

1. In a manifold, a plurality of burner sections, air and combustible mixture conducting arms extending from each side of said burner'sections, filler sections between said burner sections, registering chambers in said burner and said filler sections, and means for fastening said sections together.

2. In a manifold, a plurality of burner sections, each having a mixing chamber, air and combustible mixture conducting arms extending from each side of said burner sections, a filler section between each of said burner sections, registering passages in said burner and filler sections, said registering passages forming a plurality of chambers common to said mixing chambers.

3. In a manifold, a plurality of burner sections, each having a plurality of mixing chambers, a filler section between each of said burner sections, registering passages in said burner and filler sections, said registering passages forming a gas chamber common to all the mixing chambers of said burner sections, and an air chamber common to a mixing chamber of each of said sections and air and combustible mixture conducting arms extending from each side of said burner sections.

4. In a manifold, a plurality of burner sections, filler sections between said burner sections, registering passages in said burner sections and said filler sections forming a gas chamber and a plurality of air chambers common to said burner sections, and an end chamber communicating with said gas chamber and another end chamber communicating with all of said air chambers and air and combustible mixture conducting arms extending from each side of said burner sections.

5. In a manifold, a plurality of burner sections, each having a plurality of mixing chambers, filler sections between said burner sections, registering passages in said burner and filler sections forming a gas chamber common to all of said mixing chambers, and air chambers common to a mixing chamber of each of said burner sections, and an end section for said manifold having a chamber communicating with said gas chamber and a chamber communicating with all of said air chambers and air and combustible mixture conducting arms extending from each side of said burner sections.

6. In a manifold, a plurality of individual burner sections, each comprising chambers for forming a combustible mixture, corresponding passages in said sections, means for fastening said sections together so that said corresponding passages register with each other, said registering passages forming a gas chamber and air chambers common to the mixing chambers in each of said burner sections and air and combustible mixture conducting arms extending from each side of said burner sections.

HARRY H. DODGE. 

